# ESP8684-WROOM-02C Reference Design ## Description This is a reference design of the ESP8684-WROOM-02C WiFi module from Espressif Systems. This board has USB C for flashing via CH340, RESET and BOOT buttons, 3.3V regulator and 2 IO connectors #WiFi #BLE #MCU #referenceDesign #simple-embedded #espressif #template #reference-design ## Project Details - **Owner:** vasyl - **Created:** 9/14/2023 - **Last Updated:** 2/8/2024 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 5 ## Key Components ### D1 — [Schottky Diode](https://www.flux.ai/corynrobinson/schottky-diode~hs.md) - Package or Case Code: D_SOD-123 - Manufacturer Part Number: MBR0520LT1G - Part Type: Diode - Purchase Url: https://octopart.com/mbr0520lt1g-onsemi-2933?r=sp - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/mbr0520lt1-d.pdf - Breakdown Voltage: 20V - Current: 0.5A **Pins:** - A - K ### IC1 — [CH340C](https://www.flux.ai/vasyl/ch340c~qf3.md) - Datasheet URL: https://datasheet.lcsc.com/szlcsc/Jiangsu-Qin-Heng-CH340C_C84681.pdf - Part Type: Integrated Circuit - Manufacturer Part Number: CH340C - Manufacturer Name: Wah **Pins:** - ~CTS [pin 9] - ~DCD [pin 12] - ~DSR [pin 10] - ~DTR [pin 13] - ~RI [pin 11] - ~RTS [pin 14] - GND [pin 1] - NC [pin 7] - NC [pin 8] - R232 [pin 15] - RXD [pin 3] - TXD [pin 2] - UD- [pin 6] - UD+ [pin 5] - V3 [pin 4] - VCC [pin 16] ### IC2 — [TPS62160DSGR](https://www.flux.ai/vasyl/tps62160dsgr~zy.md) - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=http%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps62160 - Manufacturer Part Number: TPS62160DSGR **Pins:** - AGND [pin 4] - EN [pin 3] - FB [pin 5] - PAD [pin 9] - PG [pin 8] - PGND [pin 1] - SW [pin 7] - VIN [pin 2] - VOS [pin 6] ### J1 — [TYPE-C-31-M-12](https://www.flux.ai/vasyl/type-c-31-m-12~tm.md) - Part Type: Connector - Manufacturer Part Number: TYPE-C-31-M-12 - Datasheet URL: https://www.snapeda.com/parts/TYPE-C-31-M-12/HRO%20Electronics%20Co.,%20Ltd./datasheet/ - Manufacturer Name: ROHS **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin A1B12] - GND__1 [pin B1A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin S1] - SHIELD__1 [pin S2] - SHIELD__2 [pin S3] - SHIELD__3 [pin S4] - VBUS [pin A4B9] - VBUS__1 [pin B4A9] ### J2 — [Pin Header 01x10 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x10-254mm-vertical~1nl.md) - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J3 — [Pin Header 01x10 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x10-254mm-vertical~1nl.md) - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### LED1 — [LTST-C19HE1WT](https://www.flux.ai/vasy_skral/ltst-c19he1wt~x5i.md) - Part Type: LED - Manufacturer Part Number: 19-237/R6GHBHC-A04/2T - Manufacturer Name: Everlight Elec - Datasheet URL: https://datasheet.lcsc.com/lcsc/2010222107_Everlight-Elec-19-237-R6GHBHC-A04-2T_C883183.pdf **Pins:** - A - B - G - R ### Q1 — BSS138 - Manufacturer Part Number: BSS138 - Part Type: Transistor - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf **Pins:** - D - G - S ### Q2 — BSS138 - Manufacturer Part Number: BSS138 - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf - Manufacturer Name: onsemi - Part Type: Transistor **Pins:** - D - G - S ### SW1 — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Part Type: Switch - Manufacturer Name: C&K **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### SW2 — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Part Type: Switch - Manufacturer Name: C&K - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### U1 — [ESP8684-WROOM-02C](https://www.flux.ai/vasyl/esp8684-wroom-02c~km5.md) - Manufacturer Name: espressif - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ESP8684-WROOM-02C - Part Type: WiFi Module - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp8684-wroom-02c_datasheet_en.pdf **Pins:** - 3V3 [pin 1] - EN [pin 2] - GND [pin 9] - GND__3 [pin 19] - IO0 [pin 18] - IO1 [pin 17] - IO10 [pin 10] - IO18 [pin 14] - IO2 [pin 16] - IO3 [pin 15] - IO4 [pin 3] - IO5 [pin 4] - IO6 [pin 5] - IO7 [pin 6] - IO8 [pin 7] - IO9 [pin 8] - NC [pin 13] - RXD [pin 11] - TXD [pin 12] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasyl/esp8684-wroom-02c-reference-design~zgz](https://www.flux.ai/vasyl/esp8684-wroom-02c-reference-design~zgz).* --- *Generated from [https://www.flux.ai/vasyl/esp8684-wroom-02c-reference-design~zgz](https://www.flux.ai/vasyl/esp8684-wroom-02c-reference-design~zgz)*